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­9 <br />ATTIC <br />SPACE <br />ATTIC V - ENTILATION - CALCULATIONS -- <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 Rule <br />Ridge <br />-Ridge <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req.) <br />(Ft.) <br />Total <br />Ventilation <br />Provided <br />SQ. FT. <br />Total SQ. SQ. FT. SQ. IN. of <br />by Upper <br />SQ. IN. of of vented <br />IN. of of ventilation to <br />SQ. IN. of <br />SQ IN of <br />Ventilators <br />ventilation soffit <br />ventilation vented be provided <br />Ventilation <br />Ventilation <br />(See Elev) <br />required needed <br />required soffit by upper <br />needed ventilators <br />Maijn 19 2 <br />Floor 2276 21 109:2[78 546 561.0 <br />Zone 1) 285.0 276.0 <br />-*NOTE-* <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. <br />ROOF PLAN — ELEV—Bl <br />SCALE: Y4"=1'-O" <br />Aftic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 7th Edition <br />(2020) Residential R806. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />the space to be ventilated. Upper ventilators shall be located no more than 3 feet <br />(measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by eave or cornice vents. <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />(Values to be verified with Manufacturer Specifications) <br />• OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA I UNIT <br />• SOFFIT VENTS 7 SQ, IN. OF NET FREE AREA / SQ. FT. <br />• STUCCO SOFFIT VENTS - 126 SO. IN. OF NET FREE AREA / SO. FT. <br />*If not enough vented soffit is provided due to fire protection, the contractor shall use the <br />following approved vents: <br />* LOMANCO DECK -AIR (Shingle Roof) - 9 SQ. IN. OF NET FREE AREA / FT. <br />**Formula: (Sq. Ft Soffit Needed) x 7 - (Sq. In. Needed) / 9 = (Linear Ft. of Deck -Air Needed) <br />C�. <br />-A <br />_j <br />.. <br />E L71 <br />R-LI - <br />% �_EWko <br />C"> <br />A INJ <br />73 .7 <br />No <br />I.AJ <br />'TE W Z <br />C) <br />0 <br />B \ .' <br />B \:�7 <br />%* <br />0 <br />To the best of the Engineers knowledge, Information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential 7th Edition. Engineers signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />W <br />.9 <br />r' <br />co <br />E t- <br />8 <br />0 <br />04 - <br />CS 0 <br />4, , j 2 U. <br />- 50 :ft <br />G . <br />(:15' F- ['� Lu <br />C14 c� CL <br />aM <br />13 <br />LL LL 0- W <br />_j , - 0 <br />z <br />M <br />= 0 ;; <br />M C <br />Z_ M a 2 1 <br />1% <br />w <br />W <br />t-&AG Ix 0 _j <br />T. <br />I L Z <br />L <br />F'0_'Q-�: <br />N cl)Z�S:00 <br />< D 0 <br />z <br />60 _j (1) <br />I <br />co <br />co <br />4_j <br />ra <br />U.J <br />U <br />0 <br />V) <br />C'4 <br />C� <br />C,4 <br />C) <br />U_ <br />E <br />IT <br />.9 <br />Z <br />E <br />C14 (0 <br />t <br />z <br />C: <br />'0 <br />05 <br />C) <br />Lo <br />_j <br />(D <br />LO <br />> <br />Cal <br />C) <br />C M <br />F- <br />cc <br />3: <br />Lo <br />LO C) <br />0) (N <br />00 <br />LO <br />E <br />C CN <br />o) <br />co <br />ce) <br />0 <br />z <br />M <br />z <br />3 <br />E 0 <br />E <br />j6 <br />CL <br />0 <br />0 i <br />M <br />< 0 1 <br />4) <br />_j <br />JOB <br />NO: <br />21-4274 <br />SCALE : <br />AS NOTED <br />SHEEr NO. <br />5 <br />